Automatic stopping device for power-looms with fixed reeds.



Patented July 28, 1911 J. J. ZUBLER. AUTOMATIC STOPPING DEVICE FOR POWER LOOMS WITH FIXED BBEDS.

APPLIOATION FILED MAY 16, 1913.

w 1 J R W M w J m WW 1 Q n 1. 3 E I A 7 n m m 1 l J n 5 6 7 7% 1M 5 2 a "a 5 a a F 4 L 3 THE NORRIS PETERS 60., PilamirTHa. WASHlNo ION. D. C,

To all whom it may concern: Be it known thatI, Jon Ann JAooB ZU- BLER, a citizen of the Republic of Sw1tzer- 'matic Stopping Devices for. Power-Looms JOHANN JACOB ZUBLER,

on BROMBACH, GERMANY, ASSIGNOR TO M AscHINENFABRIKf RI'iTI IEORMERLY ciesPAn rronneenn, orntirr, SWITZERLAND.

AUTOMATIC STOPPING DEVICE FOR POWER-LOOMS WITH FIXED REEDS.

Specification of Letters Z Efatent.

Patented July 28, 191 1.

Application filed May 16, 1913. Serial No. 768,082.

land, residing at Brombach, Grand Duchy of Baden, Germany, have mvented certain new and useful Improvements in Autowith Fixed Reeds; and Ido hereby declare the following to be a full, clear, and exact description of the invent on, such as w llenable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters of reference ma rked thereon, which form a part of thls SPGClfiQL tion. I

severe shocks and consequently these parts I In previous constructions of power looms with'a fixed reed in which the automatic tripping devices wereactuated by the shuttle or shuttle feelers, the lay swords-and the frame of the loom were subjected to hadto be made of ample dimensions while the increased weight of the movable parts thus entailed was detrimental to the operation of the loom at highspeed so that such looms could be operated only at a'low speed. In looms in which thetripping devices are actuated by a loose" reed the lay and the frame of the loom may be made lighter. These looms have, however, the disadvantage that in consequence of the reed being easily movable they are not su table for the production of'heavv textures, so thatfor such heavy textures only looms having a fixed reed can be employed.

' The subject of the present invention is an automatically operating tripping device for power looms having a fixed reed in which the lay swords are wholly relieved from the shock occurring on stoppage of the loom,

' while the frame of the loom is relieved from 7 speed. In this manner dangerof breakage of the batten supports and parts of the frame by hard impacts is obviated. In the present construction of "the tripping devices the wear of the entire mechanism is mini- I the impact of the shuttleissl-ight, as the braklng efiectexercised'by the shuttle box tongues upon the shuttle is not greater than 1n looms w1th a free reed and consequently mized. x a

In the accompanying drawings Figures 1' and 2 are side elevations illustrating the in- 1 vention in two forms. The same reference letters denote-similarparts in the several views.

Referring firstto Fig.f-1,*1"denotes the usual crank shaft of the loom'upon which is mounted in known manner thefly-whe'el 2 serving as a brake disk; alsofixed upon the crank shaft'is a disk 3 on the periphery stationary stud 7 on the frame 5 is pivotally mounted a lever'6, upon the forward end of which is pivotallymounted on a pin 8 a pawl 9 designed'to engage the tooth I, and provided with a lateral 'arm 10 which carries a roller 11. A spring 12'one end of Whichis connected to the lever 6 and the other end of which is connected to the pawl 9, tends to draw the pawl continuously against the periphery of the disk 3. 13 is a buffer spring for the roller 11. The for ward end of the lever6 is suspended from a bracket 16 of the frame bymeans ofa rod 1d surrounded by a helical spring 15; The

forward end of the lever 6 is rounded and is adapted to engage a lever lSpivoted upon the stationary stud 17, said lever 18 acting through the intermediary of a rod 19 upon the usual stop motion lever to stop the operation of the 100m: 20 denotes enact the swords supporting the lay 2l with'the fixed reed 22. 2 1 is one of the shuttle feeler levers, 23 the shuttle box tongue and '25 the of which disk is formed atooth 4:! On a shaft carrying the shuttle feeler levers.

Upon the latter is secured an arm 26 the free end of which is adapted to engagefthe roller 11. A spring 27 is designed to draw the arm 26 upwardly into such position that its rearward end moves past the roller 11. When the shuttle 28 enters the shuttle box correctly the levers 24: are pressed backg wardly in the usual manner and the arm 26' pressed on the return movement of the lay,

upon the roller 11 whereby the pawl 9 is tilted in such manner as to prevent it from entering into engagement with the tooth 4 of thecontinuously rotating disk 3. When however, the shuttle does not enter the box correctly the spring 27 maintains the arm 26 in its raised position so that upon the return movement of the lay, the arm passes over the roller 11, without engaging it and consequently the pawl 9 remains in contact with the periphery of the disk 3 so that the tooth 4 is" engaged by the pawl 9 the crank shaft 1 is thus stopped and the lever 6 depressed by the pawl 9 the forward end of said lever 6 engaging the lever 18 and shifting itin such manner that the stop motion lever (not shown) is brought into action through. the. intermediary of the rod 19 to stop the operation of the loom. The impact of the tooth 1 transmitted by the pawl 9 upon the lever 6 is cushioned by the spring 15., The lay is wholly relieved from such impact, the greater part of which is absorbed by the crank shaft 1, .while only a small portion thereof is transmitted through the spring. 15, to the framing so that breakage; of the latter is practically'impossible. The. batten and the framing may consequently be'made of lighter proportions than was heretofore possible.v A further advantageof this construction is that the operator when'unweaving and looking for the weft at a time when the shuttle is not in the shuttle box is enabled to move the parts of the loom in reverse direction without being compelled to press the shuttle feeler levers 24- backwardly by hand inasmuch as the tooth. 4 of the disk 3 will move beneath the pawl 9.. Whenthe forward end of the lever 6 is depressed a brake shoe 31 carried by the rear end 29 of said lever by means of anadjustable screw-bolt 30 is brought into engagement with the periphery of the disk and, eflfects the final braking of the loom.

In the modified construction shown in Fig. 2 the'pawl 9 remains normally at rest and is only brought into engagement with the tooth 4: of the disk 3 when the shuttle having; failed to enter theshuttle box the tongue 23Jhas not been pressed backwardly. For this'purpose a lever 33 and a disk 34 having a tooth-35 are mounted upon a shaft 32 disposed parallel to the shaft 25. The arm 33 is. connected with a downwardly extending arm 38 of the pawl 9 by means of a connecting rod composed of two telescoping parts 36 and 37 having; apin-and-slot connection 39,40, and. a spring; 451 tending to draw the parts toward one another. During the normal operation of the loom, a spring 42 tends tfiimoveithe disk 34. in such manner that the awl. 9 willremain out of engagement with -the disk. 32. However, if the shuttle fail toenter the shuttle box, an arm 43 on the shaft 25 carrying the shuttle feeler levers engages the tooth 35 of the disk 34: so that the two-part rod 3637 turns the pawl 9 toward the disk 3, the spring ll holding the pawl 9 resiliently in contact with the periphery of said disk 3 so that the tooth 4 engages the pawl 9 thus stopping the crank shaft. It will be understood that in lieu of being mounted on a rotatable part the pawl 9 might be mounted upon a rectilinearly movable part.

What I claim is 1. In combination, with the frame, the

moving lay, the shuttle, the rotary driving member journaled in the frame, including lever engageable with said fly wheel, and

means, actuated by the shuttle, for moving the pawl, substantially as described.

1 2. In combination, with the frame, the

moving lay, the shuttle, the rotary driving member journaled in the frame, including a fly wheel, and provided with a peripheral tooth, and the stopping mechanism to be.

actuated, of acushioned lever fulcrumed in the frame and adapted to actuate the stopping mechanism, a pawl pivoted on said lever, a spring normally holding the pawl in the path of the tooth, a brake on said lever engageable with said fly wheel, and

means, actuated by the shuttle, for moving the pawl out of the path of the tooth, substantially as described,

3-. In combination, with the frame, the moving lay, the shuttle, the rotary driving member journaled in the frame, including a fly wheel, and provided with a peripheral tooth, and the stopping mechanism to be actuated, of a lever fulcrumed in the frame andwadapted to actuate the stopping mech-= anism, a rod: connected to the lever, a springcushioning said: rod on the frame, a pawl. carried by and movable upon the lever into and out of the path of the tooth of said member, a brake on said lever engageable with saidfly wheel, and means,'actuated by the shuttle, for moving'the pawl, substantially as described.

4:. In combination, with the frame, the moving lay, the shuttle, the rotary driving member journaledin the frame, including a fly wheel, and provided with a peripheral tooth, and the stopping mechanism to be actuated, of a lever arranged substantially horizontally and fulcrumed in the frame and adapted to actuate the stopping mechanism, a brake carried by said lever rearward; of

its fulcrum and adapted to peripherally on gage said fly wheel, a pawl pivoted on the In testimony whereof, I have signed my lever forward of its fulcrum and movable name to this specification in the presence of thereon into and out of the path of said two subscribin witnesses.

tooth, a spring normally holding the pawl J 0 ANN JACOB ZUBLER. 5 in said path, and means, actuated by the Witnesses:

shuttle, for moving the pawl out of said GEO. Gmronn,

path, substantially as described. ARNOLD ZUBER.

Copies of this patent may be obtained for live cents each, by addressing the "Commissioner of intents,

Washington, D. G." 

